i have a 1891 silver dollar coin in good cndition with an s at the back do you know its value
More information needed as to which coin. There were 3d 6d 1/- 2/- 2/6 5/- silver coins.
Assuming the coin is circulated and has no mintmark, retail value is $18.00-$38.00
Assuming the coin is circulated and has no mintmark, the 1891 Morgan dollar is a slightly better date Morgan with retail value of $38.00-$45.00 depending on the actual grade of the coin.
Please post a new question with more information. In 1891 there were 4 denominations of silver coins - dimes through dollars - minted at 4 different mints.
The Royal Mint did not produce an 1891 Two Pound coin.
The 1891 Morgan Silver Dollar can be seen by using the link to a picture of this coin.
The coin is very common, circulated examples sell for $17.00-$38.00
A 1891 U.S. silver dollar is a Morgan dollar. This series of coins were issued from 1878 through 1904 an for the last time in 1921. Assuming the coin is circulated and has no mintmark current values are $30.00-$45.00 depending on the actual grade of the coin.
The value of a silver coin is always changing because the value of silver is always changing. See the related link below for a silver coin value calculator. This does not give the actual value of the coin but it does give the value of the metal used to make the coin. This is know as the melt value.
Metal value depends on the purity of the silver and the weight of the coin. Numismatic value depends on the condition of the coin.
What denomination? What country?